Hydrogeology of Sierra Leone
Most of the textual information on this page was taken from the chapter on the Congo in the report ‘Groundwater in North and West Africa’ (UN 1988). This information is outdated. If you have more recent information on the hydrogeology of the Sierra Leone, please get in touch.
Dr Kirsty Upton and Brighid Ó Dochartaigh, British Geological Survey, UK
|Estimated Population in 2013*||6,092,075|
|Rural Population (% of total) (2013)*||60.8%|
|Total Surface Area*||72,180 sq km|
|Agricultural Land (% of total area) (2012)*||56.8%|
|Border Countries||Guinea, Liberia|
|Annual Freshwater Withdrawal (2013)*||212.2 Million cubic metres|
|Annual Freshwater Withdrawal for Agriculture (2013)*||21.5%|
|Annual Freshwater Withdrawal for Domestic Use (2013)*||52.3%|
|Annual Freshwater Withdrawal for Industry (2013)*||26.2%|
|Rural Population with Access to Improved Water Source (2012)*||42.4%|
|Urban Population with Access to Improved Water Source (2012)*||87.1%|
* Source: World Bank
For further detail on the climate datasets used see the climate resources section.
The geology map shows a simplified version of the geology at a national scale. More information is available in the report UN (1988) (see References section, below).
The hydrogeology map below shows a simplified version of the type and productivity of the main aquifers at a national scale (see the Aquifer properties resource page for more details).
More information on the hydrogeology of Burundi is available in the report UN (1988) (see References section, below).
Information on groundwater sources (water points) is collected in certain districts, but there is no central national database. Borehole logs with geological information are not readily available.
For further information about transboundary aquifers, please see the Transboundary aquifers resources page
The following report provides more information on the geology and hydrogeology of Sierra Leone. It, and others, can be accessed through the Africa Groundwater Literature Archive
United Nations. 1988. Groundwater in North and West Africa: Sierra Leone. United Nations Department of Technical Cooperation for Development and Economic Commission for Africa. Department of Technical Cooperation for Development and Economic Commission for Africa, Natural Resources/Water Series No. 18.